Ring Alarm Window and Door Contact Sensor 6-Pack (2nd Gen) 4SD6SZ-0EN0

Expand your Ring Alarm system to secure each door and window in your home, and hear chirps as soon as they open. Ring Alarm Contact Sensors mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm and receive mobile alerts from the Ring App so you’ll always be the first to know when something’s ajar (Ring Protect subscription required, sold separately). Requires Ring Alarm or Ring Alarm Pro (sold separately). Hear chirps when doors or windows open. Receive mobile notifications from the Ring App when sensors are triggered (subscription required, sold separarately). Easy mounts to door and window frames, no tools required. Includes two 3V CR2032 batteries Get 24/7 emergency police, fire, and medical response when you opt-in to Alarm Professional Monitoring with a Ring Protect Pro subscription (sold separately, additional license and other fees may apply).